[PATCH 00/11] Panel Replay + Adaptive sync

Jouni Högander jouni.hogander at intel.com
Fri May 2 08:58:51 UTC 2025


This patch set is adding missing configuration to have Panel Replay
and Adaptive Sync enabled simultaneously. Also some issues identified
while debugging are fixed:

1. Source PORT ALPM configuration has to made during modeset.
2. PHY_CMN1_CONTROL is not written according to HAS document
3. Wrong register field definitions for PORT_ALPM_LFPS_CTL.

Patches are tested on LunarLake and PantheLake using our reference panel supporting
Adaptive Sync and Panel Replay.

EMP_AS_SDP_TL is currently missing completely from drm-tip. There is a patch for that which is needed if testing these patches:

https://patchwork.freedesktop.org/series/148421/

Otherwise "PSR idle timeout" errors are seen while testing.

Jouni Högander (11):
  drm/dp: Add Panel Replay capability bits from DP2.1 specification
  drm/i915/psr: Read both Panel Replay capability registers from DPCD
  drm/i915/alpm: Add PR_ALPM_CTL register definitions
  drm/i915/alpm: Write PR_ALPM_CTL register
  drm/i915/psr: Add interface to check if AUXLess ALPM is needed by PSR
  drm/i915/alpm: Add new interface to check if AUXLess ALPM is used
  drm/i915/alpm: Move port alpm configuration
  drm/i915/display: Add PHY_CMN1_CONTROL register definitions
  drm/i915/display: Add function to configure LFPS sending
  drm/i915/psr: Fix using wrong mask in REG_FIELD_PREP
  drm/i915/psr: Do not disable Panel Replay in case VRR is enabled

 drivers/gpu/drm/i915/display/intel_alpm.c     | 83 ++++++++++++++-----
 drivers/gpu/drm/i915/display/intel_alpm.h     |  4 +
 drivers/gpu/drm/i915/display/intel_cx0_phy.c  | 30 +++++++
 drivers/gpu/drm/i915/display/intel_cx0_phy.h  |  2 +
 .../gpu/drm/i915/display/intel_cx0_phy_regs.h |  3 +
 drivers/gpu/drm/i915/display/intel_ddi.c      | 12 +++
 .../drm/i915/display/intel_display_types.h    |  2 +-
 drivers/gpu/drm/i915/display/intel_psr.c      | 40 ++++++---
 drivers/gpu/drm/i915/display/intel_psr.h      |  2 +
 drivers/gpu/drm/i915/display/intel_psr_regs.h | 14 +++-
 include/drm/display/drm_dp.h                  | 10 ++-
 11 files changed, 164 insertions(+), 38 deletions(-)

-- 
2.43.0



More information about the Intel-xe mailing list